Qwik-Gard Ground-Fault Circuit Interrupters offer a means of providing ground-fault protection for people. Qwik-Gard “people protection” ground-fault circuit interrupters are built as Class A devices in accordance with UL Standard 489 and CSA C22.2 #144 for ground-fault circuit interrupters (GFCIs). Class A devices must trip at 6 milliamperes of ground-fault current and above, and hold below 4 milliamperes of ground-fault current. Qwik-Gard GFCIs provide the same branch circuit protection as standard QO circuit breakers. They are longer than standard QO circuit breakers, and thus require more gutter space. All QO electrical accessories except shunt trip and all QO mechanical accessories are available for QO-GFI and QOBGFI circuit breakers. Qwik-Gard circuit breakers are UL Listed and CSA Certified and available in both one- and two-pole constructions. The ground-fault sensor in a Qwik-Gard GFCI continuously monitors the current flow in the load and neutral conductors. The sensor compares the current flow in all directions. If the current flowing back to the source is less than the current flowing out to the load, a ground fault exists. When the difference in current flow exceeds 6 milliamperes, the sensor sends a signal to trip the GFCI. The trip will be indicated by the Visi-Trip indicator and the operating handle will move to the center tripped position. Qwik-Gard Class A GFCIs include a self-contained means of testing the ground-fault circuitry. If the GFCI is connected correctly, with the pigtail connected to the neutral assembly in the load center or panelboard, pressing the test button will trip the GFCI and show a trip indication. UL requires that GFCIs must be operational at 85% of the rated voltage.